1. MSG211 Marks & Spencer Exchange 2003 Migration Colin Rogers Gary Christensen Mike Guerrini

2. Who are we ? Speakers Colin Rogers – Project Manager Gary Christensen – Exchange Consultant Mike Guerrini – Exchange Consultant Marks & Spencer Marks & Spencer is one of the UK's leading retailers of clothing, foods, homeware and financial services, serving 10 million customers a week in over 300 UK stores. The Company also trades in 30 countries worldwide. Marks & Spencer has a Group turnover in excess of £8 billion.

3. Agenda Where we started from Why we chose to upgrade Where we wanted to get to How we got there and what it looks like What we learned along the way Questions and answers

4. Agenda Where we started from Why we chose to upgrade Where we wanted to get to How we got there and what it looks like What we learned along the way Questions and answers

5. Where did we start from ? Windows NT4 (with a bit of AD)

6. Where did we start from ? Exchange 5.5 30 Exchange Servers 12,000 Mailboxes (used by 90,000 users) Stable Environment… …but rapidly running out of support

7. Exchange Topology

8. Agenda Where we started from Why we chose to upgrade Where we wanted to get to How we got there and what it looks like What we learned along the way Questions and answers

9. Why did we choose to upgrade ? Driven by head office relocation Recognition that e-mail was business critical New architectural principles Out of support: NT4 Server Exchange 5.5 Legacy server hardware

10. Where did we want to get to ? Centralised service offering Clustering (started with 4 node…) Windows Server 2003 Centralised storage (SAN) Improved backups (snapshots) Mobility features Native mode Exchange organisation

11. Agenda Where we started from Why we chose to upgrade Where we wanted to get to How we got there and what it looks like What we learned along the way Questions and answers

12. How did we get there ? One Team Dedicated internal team Virtual supplier team Microsoft JDP Rapid Application Deployment approach

13. How did we get there ? Collapsing Exchange 5.5 sites New domain structure ADC design and deployment Exchange 2003 deployment Moving the mailboxes (finally)

14. New Exchange Domain

16. ADC Design Considerations 303181 – NTDSNOMATCH We needed to set this value in Custom Attribute 11 (this also breaks ADC tools) 269843 – ADC overwrites display name 243311 – Ambiguous Name Resolution We use Custom Attribute 6 to resolve mailbox names

17. Exchange Topology

19. How did we get there ? Collapsing Exchange 5.5 sites New domain structure ADC design and deployment Exchange 2003 deployment Moving the mailboxes (finally) The importance of testing!

20. Where next ? Still a long way to go… Stores mailboxes Marks & Spencer Money mailboxes Application mailboxes Hong Kong site MOM Snapshot backups

21. Agenda Where we started from Why we chose to upgrade Where we wanted to get to How we got there and what it looks like What we learned along the way Questions and answers

22. Lessons Learned – The Good Windows 2003 SAN technology Exchange 2003 Multi-threaded mailbox migration tool JDP experience

23. Lessons Learned – The not so good 3 rd Party vendor support for: Windows 2003 VSS requestor availability Gigabit Ethernet issues Migrating role based mailboxes Random loss of delegate permissions during mailbox move

24. To recap … Was it worth upgrading? Would we do it again? Would we do it differently?

25. Any Questions ? Either now or later colin.rogers@marks-and-spencer.com gary.christensen@marks-and-spencer.com mike.guerrini@marks-and-spencer.com

26. evaluations

27. © 2003 Microsoft Corporation. All rights reserved. This presentation is for informational purposes only. MICROSOFT MAKES NO WARRANTIES, EXPRESS OR IMPLIED, IN THIS SUMMARY.